| 摘要 |
PROBLEM TO BE SOLVED: To provide a reference voltage generating circuit for detecting a decrease in a reference voltage to be outputted, and for outputting a signal for fixing a control logic when the reference voltage decreases. SOLUTION: A reference voltage generating circuit 1 including an output stage for outputting a predetermined reference voltage based on a band gap voltage is provided with a logic fixed signal outputting means 1c for detecting that a predetermined reference voltage is not outputted due to a decrease in a power source voltage, and for outputting the detection signal as a signal for fixing a control logic used when the reference voltage decreases. COPYRIGHT: (C)2005,JPO&NCIPI
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